Insurer uses patients' personal data to predict who will get sick

John Iovine finally went home in April 2014, after several months in a rehab facility. And this point in patients' recovery — when they've been discharged and have to sink or swim on their own — is the stage that everyone in the health system is paying special attention to right now. For too long, too many people like John Iovine would take a dive at this stage and end up back in the hospital again. The industry calls these returns to the hospital preventable readmissions, and they are a huge drain on finances, costing Medicare alone $15 billion annually. That's why Medicare launched an initiative a few years ago that penalizes hospitals that see too many patients readmitted too soon.